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Imports System.Runtime.InteropServices
Public Class Form1
Public Sub New()
InitializeComponent()
Me.webhtml.Url = New System.Uri(Application.StartupPath + "\test.html", System.UriKind.Absolute)
End Sub
Private Sub ToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton1.Click
Me.webhtml.ShowPageSetupDialog()
Me.Text = ("ShowPageSetupDialog")
End Sub
Private Sub ToolStripButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton2.Click
Me.webhtml.ShowPrintPreviewDialog()
End Sub
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
End Sub
Dim hook As New Win32Hook()
Private Sub hook_onMouseChange(ByVal sender As Object, ByVal e As EventArgs)
Try
Me.Text = Cursor.Position.ToString()
Catch ex As Exception
End Try
End Sub
Private Sub ToolStripButton3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton3.Click
AddHandler hook.onMouseChange, AddressOf hook_onMouseChange
hook.SetHook()
End Sub
Private Sub ToolStripButton4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton4.Click
RemoveHandler hook.onMouseChange, AddressOf hook_onMouseChange
End Sub
End Class
Public Class Win32Hook
<DllImport("kernel32")> _
Public Shared Function GetCurrentThreadId() As Integer
End Function
<DllImport("user32", CharSet:=CharSet.Auto, CallingConvention:=CallingConvention.StdCall)> _
Public Shared Function SetWindowsHookEx(ByVal idHook As HookType, ByVal lpfn As HOOKPROC, ByVal hmod As Integer, ByVal dwThreadId As Integer) As Integer
End Function
Public Enum HookType
WH_GETMESSAGE = 5 '系统都会调用WH_CBT Hook子程,这些事件包括
End Enum
Public Delegate Function HOOKPROC(ByVal nCode As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Integer
Public Event onMouseChange As System.EventHandler
Public Sub SetHook()
SetWindowsHookEx(HookType.WH_GETMESSAGE, New HOOKPROC(AddressOf Me.MyKeyboardProc), 0, GetCurrentThreadId())
End Sub
Public Function MyKeyboardProc(ByVal nCode As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Integer
RaiseEvent onMouseChange(Nothing, Nothing)
Return 0
End Function
End Class